也门1区块油气藏特征及主控因素分析

摘要

Several hydrocarbon reservoirs have been found in Block 1,Yemen.The analysis reveals that source conditions,hydrocarbon immigration systems,seal conditions and following tectonic movements are regarded as key factors of reservoir formation of the area,and builds up two kinds of hydrocarbon accumulation pattern including upper source-lower reservoir and lower source-upper reservoir.The research results show that source rocks below salt sediments and reservoir upper salt sediments can be communicated by faults to result in hydrocarbon migration and accumulating in the reservoir upper salt sediment,however,following tectonic movements play an important role in hydrocarbon accumulation of the upper salt sediments.The comprehensive analysis reveals that the upper salt sediments have better accumulation condition and are considered as main targets for the next petroleum exploration.%也门1区块已发现了多个油气藏,分析认为也门1区块油气成藏的关键因素包括烃源条件、疏导体系、盖层条件和后期构造运动等,建立了上生下储和下生上储两种油气成藏模式。研究表明通源断层沟通了盐下烃源岩与盐上储层,使得盐上储层发生了油气聚集,但后期构造运动对盐上油藏有重要影响。综合分析认为盐下成藏组合成藏条件较好,是下步勘探的主要目的层。